I'm wondering if anyone has access to Boston passenger lists for 2 relations of mine. Thomas B. Stocker (dob. 1843) emigrated from England to Nebraska, USA in 1871. I haven't been able to find where he left from or the ship he was on, though I'm fairly certain he arrived via Boston (as he used this port later in his life to travel from England to Boston in 1908). His wife (born Harriet Parson in 1848) emigrated later in 1884 - not sure which name she used - ie. Parson or Stocker), and again I'm not sure where she left from or the name of the ship. Any information would be greatly appreciated.

Cheers,
Trem